首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   901篇
  免费   102篇
  国内免费   2篇
耳鼻咽喉   13篇
儿科学   29篇
妇产科学   24篇
基础医学   114篇
口腔科学   16篇
临床医学   88篇
内科学   188篇
皮肤病学   19篇
神经病学   55篇
特种医学   97篇
外科学   86篇
综合类   11篇
预防医学   148篇
眼科学   34篇
药学   26篇
中国医学   1篇
肿瘤学   56篇
  2023年   16篇
  2021年   13篇
  2020年   7篇
  2019年   9篇
  2018年   16篇
  2017年   23篇
  2016年   19篇
  2015年   21篇
  2014年   23篇
  2013年   39篇
  2012年   41篇
  2011年   33篇
  2010年   26篇
  2009年   31篇
  2008年   34篇
  2007年   38篇
  2006年   38篇
  2005年   37篇
  2004年   38篇
  2003年   34篇
  2002年   37篇
  2001年   48篇
  2000年   31篇
  1999年   20篇
  1998年   28篇
  1997年   16篇
  1996年   25篇
  1995年   6篇
  1994年   12篇
  1993年   11篇
  1992年   11篇
  1991年   11篇
  1990年   15篇
  1989年   21篇
  1988年   14篇
  1987年   8篇
  1986年   14篇
  1985年   23篇
  1984年   13篇
  1983年   10篇
  1982年   10篇
  1979年   6篇
  1978年   11篇
  1977年   5篇
  1976年   9篇
  1972年   7篇
  1971年   7篇
  1969年   4篇
  1967年   5篇
  1966年   4篇
排序方式: 共有1005条查询结果,搜索用时 15 毫秒
1.
To test hypotheses of opposing roles of dopamine and serotonin in prolactin secretion in seasonal affective disorder, the authors determined basal serum prolactin concentrations for premenopausal women, eight with and 14 without seasonal affective disorder, in late afternoon during the follicular phase of the menstrual cycle (and a subgroup during the luteal phase) in winter and summer. Despite their significantly higher Hamilton depression scale scores in winter than in summer, the patients had significantly lower prolactin concentrations than the control subjects in both seasons. These results suggest that low prolactin secretion may be a trait characteristic in seasonal affective disorder.  相似文献   
2.
3.
4.
5.
6.
Irving  HD; Burbridge  BE 《Radiology》1989,173(1):91-92
In vitro and in vivo precipitation of iodinated contrast agents when ioxaglate and papaverine are given together has been reported. To verify these reports and to investigate other medications not previously tested, the authors analyzed mixtures of contrast agents and medications in vitro with a light spectrophotometer and observed them for visible precipitates for up to 120 minutes. Previously reported incompatibilities between ionic or low-osmolality contrast media and medications were verified, and several new incompatibilities were discovered. No incompatibilities were found when the drugs tested were mixed with the new nonionic contrast media.  相似文献   
7.
Sequential contrast-enhanced MR imaging of the penis   总被引:1,自引:0,他引:1  
Kaneko  K; De Mouy  EH; Lee  BE 《Radiology》1994,191(1):75
  相似文献   
8.
The role of Chlamydia pneumoniae in 110 Sudanese children with signs of acute lower respiratory tract infections (ALRI) was investigated. Four (3.6%) had evidence of C. pneumoniae infection, of whom 3 were culture-positive, while 1 had an antibody response suggesting a recent infection. IgG antibodies at a titer of ≥1:32 to C. pneumoniae, Chlamydia psittaci and Chlamydia trachomatis were detected in 27 (24.5%), 27 (24.5%) and 7 (6.4%) of the 110 ALRI cases, respectively. C. pneumoniae, C. trachomatis or C. psittaci were not detected in nasopharyngeal secretions from any of 110 patients when fluorescence-labeled specific monoclonal antibodies were used. In a seroepidemiological survey, 318 healthy Sudanese persons aged between 1 month and 67 years were studied for C. pneumoniae antibodies.  相似文献   
9.
10.
We report the case of a 39-year-old female patient suffering from Sweet's syndrome after an upper respiratory tract infection. Cyclosporin A at a dose of 10 mg/kg per day was given as initial treatment. Skin lesions and general malaise resolved within 9 days. The cyclosporin dose was decreased within 21 days, without recurrence of the eruption. Cyclosporin is a potent inhibitor of T lymphocytes, but affects granulocyte and monocyte functions as well. Success of treatment in our case shows that cyclosporin represents an alternative to steroid treatment in patients with Sweet's syndrome.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号